Home / 2,853.48-4,280.76-905.97

Finding the Fourth Proportional to 2,853.48, 4,280.76 and 905.97

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Solution

The fourth proportional to 2,853.48, 4,280.76 and 905.97 is: 1,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.48 : 4,280.76 = 905.97 : x
  2. Step 2: Convert to fraction form
    2,853.48/4,280.76 = 905.97/x
  3. Step 3: Cross multiply
    2,853.48x = 4,280.76 × 905.97
  4. Step 4: Simplify right side
    2,853.48x = 3,878,240.14
  5. Step 5: Solve for x
    x = 3,878,240.14/2,853.48
  6. Step 6: Final answer
    x = 1,359.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.